<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	const ERROR_USER_IS_DELETED=3;

    private $_id;
	private $_user;

	/*
	 * Authenticates a user.
	 * @return boolean whether authentication succeeds.
	 */
    public function authenticate()
    {
        $user = $this->_user = User::model()->findByAttributes(array('username'=>$this->username));

        if ($user === null) {
            $this->errorCode = self::ERROR_USERNAME_INVALID;
		} 
		elseif (!bCrypt::verify($this->password, $user->password)) {
            $this->errorCode = self::ERROR_PASSWORD_INVALID;
		}
		elseif ($user->is_deleted) {
            $this->errorCode = self::ERROR_USER_IS_DELETED;
		}	
		else {
            $this->_id = $user->id;
            $this->errorCode = self::ERROR_NONE;
        }
        return !$this->errorCode;
    }
 
    public function getId()
    {
        return $this->_id;
    }

	public function getUser()
	{
		return $this->_user;
	}
}
